Comment by mschuster91

What I did in all my rentals (in Germany) was to outright run new cable. All you need is a bunch of drills - if you want to pull Ethernet, a 10mm drill will be sufficient, if you want pre-fab LC fiber you'll need a 15mm drill (better 17mm), and if you want to pull pipe (which I prefer) a 27mm drill for a DN20 pipe. And when you move out, take out the pipe, put some plaster over, smooth and paint, and no one can ever tell what has been there.